On Thu, Mar 5, 2020 at 04:45:23PM +0900, Michael Paquier wrote:
> On Mon, Mar 02, 2020 at 03:38:01PM +0000, PG Doc comments form wrote:
> > Seems like here the example missed 'm' as an alias and a dot in the `where`
> > clause:
> > ... messages m
> > ... m.id = 12;
>
> This query is valid as-is.
>
> > SELECT m.title || ' ' || m.author || ' ' || m.abstract || ' ' || d.body AS
> > document
> > FROM messages m, docs d
> > WHERE mid = did AND mid = 12;
> >
> > Possibly, the example missed dots:
> > ... m.id = d.id AND m.id = 12;
>
> This one is actually valid as well, as long as both relations don't
> use the same column names, but I can see your point to add the aliases
> to the quals of the WHERE clause to bring more clarity.
Agreed, alias added in all supported branches.
--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EnterpriseDB https://enterprisedb.com
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